Patents by Inventor Reuben W. Edgar
Reuben W. Edgar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11219711Abstract: In one example embodiment, a system for stimulating healing of tissue at a wound site is disclosed. The system comprises a dressing including a porous pad and a drape covering the pad at a wound site for maintaining negative pressure at a wound site, a negative-pressure source including a pump and an electric motor to generate a pump pressure (PP) for applying to the wound site, and a first pressure sensor for sensing the pump pressure (PP). The system further comprises a controller coupled to the first pressure sensor and electric motor and including a PID controller that compares the pump pressure (PP) to a target pump pressure (TPP) and a bang-bang controller that controls wound pressure (WP) proximate the wound site, and wherein the controller is configured to alternatively select the bang-bang controller when the system is in a low-leakage condition or the PID controller when the system is in a high-leakage condition.Type: GrantFiled: October 12, 2018Date of Patent: January 11, 2022Assignee: KCI Licensing, Inc.Inventors: Loren Francis, Reuben W. Edgar, Jr.
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Publication number: 20190125942Abstract: In one example embodiment, a system for stimulating healing of tissue at a wound site is disclosed. The system comprises a dressing including a porous pad and a drape covering the pad at a wound site for maintaining negative pressure at a wound site, a negative-pressure source including a pump and an electric motor to generate a pump pressure (PP) for applying to the wound site, and a first pressure sensor for sensing the pump pressure (PP). The system further comprises a controller coupled to the first pressure sensor and electric motor and including a PID controller that compares the pump pressure (PP) to a target pump pressure (TPP) and a bang-bang controller that controls wound pressure (WP) proximate the wound site, and wherein the controller is configured to alternatively select the bang-bang controller when the system is in a low-leakage condition or the PID controller when the system is in a high-leakage condition.Type: ApplicationFiled: October 12, 2018Publication date: May 2, 2019Inventors: Loren FRANCIS, JR., Reuben W. EDGAR, JR.
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Patent number: 8328776Abstract: A method of treating a tissue site is provided. The method includes applying a reduced pressure to a tissue site with a reduced pressure source. A source pressure is monitored at the reduced pressure source, and a differential pressure is determined between the source pressure and the desired tissue site pressure. If a blockage is present between the reduced pressure source and the tissue site, the differential pressure is limited to a first maximum differential pressure. If no blockage is present between the reduced pressure source and the tissue site, the differential pressure is limited to a second maximum differential pressure.Type: GrantFiled: June 28, 2010Date of Patent: December 11, 2012Assignee: KCI Licensing, Inc.Inventors: Randall P. Kelch, Xiaolu Zheng, Reuben W. Edgar, Jr., Jonathan Paul Jaeb, Thomas Paul Lawhorn, Shannon C Ingram
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Patent number: 7991448Abstract: A method for removing motion artifacts from devices for sensing bodily parameters and apparatus and system for effecting same that includes analyzing segments of measured data representing bodily parameters and possibly noise from motion artifacts. Each data segment is frequency analyzed to determine up to three candidate peaks for further analysis. Up to three candidate frequencies may be filtered and various parameters associated with each candidate frequency are calculated. A pulse-estimate input may also be accepted from an external source. The best frequency, if one exists, is determined by arbitrating the candidate frequencies and the pulse-estimate input using the calculated parameters according to predefined criteria. If a best frequency is found, a pulse rate and SpO2 may be output. If a best frequency is not found, other, conventional techniques for calculating pulse rate and SpO2 may be used.Type: GrantFiled: April 21, 2006Date of Patent: August 2, 2011Assignee: Philips Electronics North America CorporationInventors: Reuben W. Edgar, Jr., August J. Allo, Jr., Paul B. Gunneson, Jesus D. Martin, John R. DelFavero, Michael B. Jaffe
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Publication number: 20100268179Abstract: A method of treating a tissue site is provided. The method includes applying a reduced pressure to a tissue site with a reduced pressure source. A source pressure is monitored at the reduced pressure source, and a differential pressure is determined between the source pressure and the desired tissue site pressure. If a blockage is present between the reduced pressure source and the tissue site, the differential pressure is limited to a first maximum differential pressure. If no blockage is present between the reduced pressure source and the tissue site, the differential pressure is limited to a second maximum differential pressure.Type: ApplicationFiled: June 28, 2010Publication date: October 21, 2010Inventors: Randall P. Kelch, Xiaolu Zheng, Reuben W. Edgar, JR., Jonathan Paul Jaeb, Thomas Paul Lawhorn, Shannon C. Ingram
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Patent number: 7758555Abstract: A method of treating a tissue site is provided. The method includes applying a reduced pressure to a tissue site with a reduced pressure source. A source pressure is monitored at the reduced pressure source, and a differential pressure is determined between the source pressure and the desired tissue site pressure. If a blockage is present between the reduced pressure source and the tissue site, the differential pressure is limited to a first maximum differential pressure. If no blockage is present between the reduced pressure source and the tissue site, the differential pressure is limited to a second maximum differential pressure.Type: GrantFiled: September 19, 2007Date of Patent: July 20, 2010Assignee: KCI Licensing, Inc.Inventors: Randall P. Kelch, Xiaolu Zheng, Reuben W. Edgar, Jr., Jonathan Paul Jaeb, Thomas Paul Lawhorn, Shannon C Ingram
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Patent number: 7072702Abstract: A method for removing motion artifacts from devices for sensing bodily parameters and apparatus and system for effecting same. The method includes analyzing segments of measured data representing bodily parameters and possibly noise from motion artifacts. Each segment of measured data may correspond to a single light signal transmitted and detected after transmission or reflection through bodily tissue. Each data segment is frequency analyzed to determine up to three candidate peaks for further analysis. Each of the up to three candidate frequencies may be filtered and various parameters associated with each of the up to three candidate frequencies are calculated. The best frequency, if one exists, is determined by arbitrating the candidate frequencies using the calculated parameters according to predefined criteria. If a best frequency is found, a pulse rate and SPO2 may be output. If a best frequency is not found, other, conventional techniques for calculating pulse rate and SpO2 may be used.Type: GrantFiled: June 22, 2004Date of Patent: July 4, 2006Assignee: RIC Investments, LLCInventors: Reuben W. Edgar, Jr., August J. Allo, Jr., Paul B. Gunneson, Jesus D. Martin, John R. DelFavero, Michael B. Jaffe
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Patent number: 6836502Abstract: A light source for a spectroscopy unit that measures tissue includes a block for engaging tissue and a light source. The block is formed of translucent material. The light source is positioned in close proximity to the block either directly or through use of a light fiber. The light source produces light at a single wavelength or small range of wavelengths shorter than the desired range of wavelengths to be produced by the light source for the spectroscopy unit. A luminescent material is placed in the light path between light source and the tissue to produce the desired wavelength of light when pumped by the light source.Type: GrantFiled: January 17, 2003Date of Patent: December 28, 2004Assignee: Hutchinson Technology IncorporatedInventors: Larry D. Canady, Christopher B. Catterson, Reuben W. Edgar, Jr., Ralph Henry Hill, Jr., Brian Lee Robey
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Patent number: 6810277Abstract: A method for removing motion artifacts from devices for sensing bodily parameters and apparatus and system for effecting same. The method includes analyzing segments of measured data representing bodily parameters and possibly noise from motion artifacts. Each segment of measured data may correspond to a single light signal transmitted and detected after transmission or reflection through bodily tissue. Each data segment is frequency analyzed to determine up to three candidate peaks for further analysis. Each of the up to three candidate frequencies may be filtered and various parameters associated with each of the up to three candidate frequencies are calculated. The best frequency, if one exists, is determined by arbitrating the candidate frequencies using the calculated parameters according to predefined criteria. If a best frequency is found, a pulse rate and SpO2 may be output. If a best frequency is not found, other, conventional techniques for calculating pulse rate and SpO2 may be used.Type: GrantFiled: August 6, 2002Date of Patent: October 26, 2004Assignee: RIC Investments, Inc.Inventors: Reuben W. Edgar, Jr., August J. Allo, Jr., Paul B. Gunneson, Jesus D. Martin, John R. DelFavero, Michael B. Jaffe
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Publication number: 20030181805Abstract: A light source for a spectroscopy unit that measures tissue includes a block for engaging tissue and a light source. The block is formed of translucent material. The light source is positioned in close proximity to the block either directly or through use of a light fiber. The light source produces light at a single wavelength or small range of wavelengths shorter than the desired range of wavelengths to be produced by the light source for the spectroscopy unit. A luminescent material is placed in the light path between light source and the tissue to produce the desired wavelength of light when pumped by the light source.Type: ApplicationFiled: January 17, 2003Publication date: September 25, 2003Inventors: Larry D. Canady, Christopher B. Catterson, Reuben W. Edgar, Ralph Henry Hill, Brian Lee Robey
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Patent number: 6519486Abstract: A method for removing motion artifacts from devices for sensing bodily parameters and apparatus and system for effecting same. The method includes analyzing segments of measured data representing bodily parameters and possibly noise from motion artifacts. Each segment of measured data may correspond to a single light signal transmitted and detected after transmission or reflection through bodily tissue. Each data segment is frequency analyzed to determine up to three candidate peaks for further analysis. Each of the up to three candidate frequencies may be filtered and various parameters associated with each of the up to three candidate frequencies are calculated. The best frequency, if one exists, is determined by arbitrating the candidate frequencies using the calculated parameters according to predefined criteria. If a best frequency is found, a pulse rate and SpO2 may be output. If a best frequency is not found, other, conventional techniques for calculating pulse rate and Spo2 may be used.Type: GrantFiled: April 10, 2000Date of Patent: February 11, 2003Assignee: NTC Technology Inc.Inventors: Reuben W. Edgar, Jr., August J. Allo, Jr., Paul B. Gunneson, Jesus D. Martin, John R. DelFavero, Michael B. Jaffe
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Publication number: 20030009091Abstract: A method for removing motion artifacts from devices for sensing bodily parameters and apparatus and system for effecting same. The method includes analyzing segments of measured data representing bodily parameters and possibly noise from motion artifacts. Each segment of measured data may correspond to a single light signal transmitted and detected after transmission or reflection through bodily tissue. Each data segment is frequency analyzed to determine up to three candidate peaks for further analysis. Each of the up to three candidate frequencies may be filtered and various parameters associated with each of the up to three candidate frequencies are calculated. The best frequency, if one exists, is determined by arbitrating the candidate frequencies using the calculated parameters according to predefined criteria. If a best frequency is found, a pulse rate and SpO2 may be output. If a best frequency is not found, other, conventional techniques for calculating pulse rate and SpO2 may be used.Type: ApplicationFiled: August 6, 2002Publication date: January 9, 2003Inventors: Reuben W. Edgar, August J. Allo, Paul B. Gunneson, Jesus D. Martin, John R. DelFavero, Michael B. Jaffe
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Patent number: 6393311Abstract: A method for removing motion artifacts from devices for sensing bodily parameters and apparatus and system for effecting same. The method includes analyzing segments of measured data representing bodily parameters and possibly noise from motion artifacts. Each segment of measured data may correspond to a single light signal transmitted and detected after transmission or reflection through bodily tissue. Each data segment is frequency analyzed to determine dominant frequency components. The frequency component which represents at least one bodily parameter of interest is selected for further processing. The segment of data is subdivided into subsegments, each subsegment representing one heartbeat. The subsegments are used to calculate a modified average pulse as a candidate output pulse.Type: GrantFiled: October 1, 1999Date of Patent: May 21, 2002Assignee: NTC Technology Inc.Inventors: Reuben W. Edgar, Jr., August J. Allo, Jr., Jesus D. Martin, John R. DelFavero, Michael B. Jaffe
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Patent number: 5216598Abstract: A noninvasive optical oximeter measures oxygen saturation of arterial blood. A patient's arterial blood is illuminated with light at two different wavelengths and the intensity of the reflected light is sensed by a photodetector and an output signal is created in response thereto. The output signal is processed to form a ratio representing the AC component of the reflected light at each wavelength over the DC component. The oxygen saturation of the blood is calculated by correlating the quotient of these ratios with an oxygen reference curve uniquely representative of the blood oxygen characteristics of a particular patient. The pulse amplitude signals for the AC component at each wavelength are compensated for the effects of upward or downward trends and, therefore, the accuracy of the blood oxygen saturation calculation is significantly increased.Type: GrantFiled: October 15, 1991Date of Patent: June 1, 1993Assignee: Colin Electronics Co., Ltd.Inventors: Ronald L. Branstetter, Reuben W. Edgar
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Patent number: 4854699Abstract: A noninvasive optical oximeter for measuring oxygen saturation of arterial blood. A sample of blood is illuminated with light at four different wavelengths. Light reflected by the blood is sensed by a photodetector and a plurality of output signals are created in response thereto. The reflected light at each of the four wavelengths is detected after contact with the blood and is correlated with the oxygen saturation of the patient's blood using mathematical relationships for arterial and venous oxygen saturation. The present invention provides a noninvasive backscatter oximeter which is capable of providing accurate indications of a patient's blood oxygen saturation without the need for obtaining prior information relating to the oxygen content of the patient's blood.Type: GrantFiled: November 2, 1987Date of Patent: August 8, 1989Assignee: Nippon Colin Co., Ltd.Inventor: Reuben W. Edgar, Jr.
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Patent number: 4796636Abstract: A noninvasive optical oximeter for measuring oxygen saturation of arterial blood. A sample of blood is illuminated with light at two different wavelengths. Light reflected by the blood is sensed by a photodetector and an output signal is created in response thereto. The output signal is processed to form a quotient representing the AC components of the reflected light at each wavelength. The oxygen saturation of the blood is calculated by correlating this quotient with an oxygen saturation reference curve uniquely representative of the blood oxygen saturation characteristics of a particular individual. The reference curve used in the preferred embodiment of the invention is calibrated in a two-step process which minimizes the effects of calibration errors. A first oxygen saturation reference curve is calculated which is based on a linear relationship between the ratio of the AC components of the reflected light.Type: GrantFiled: September 10, 1987Date of Patent: January 10, 1989Assignee: Nippon Colin Co., Ltd.Inventors: Ronald L. Branstetter, Reuben W. Edgar, Jr.
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Patent number: 4714080Abstract: A noninvasive optical oximeter for measuring oxygen saturation of arterial blood. A sample of blood is illuminated with light at two different wavelengths. Light reflected by the blood is sensed by a photodetector and an output signal is created in response thereto. The output signal is processed to form a quotient representing the AC components of the reflected light at each wavelength. The oxygen saturation of the blood is calculated by correlating this quotient with an oxygen saturation reference curve uniquely representative of the blood oxygen saturation characteristics of a particular individual.Type: GrantFiled: October 6, 1986Date of Patent: December 22, 1987Assignee: Nippon Colin Co., Ltd.Inventors: Reuben W. Edgar, Jr., Dennis W. Gilstad, Ronald L. Branstetter